An experimental study on recombinant adenovirus p53 transfected in oral dysplastic epithelial cells / 华西口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To investigate and evaluate the appropriate virus titer and transfection efficiency of recombinant adenovirus p53 into the oral dysplastic epithelial cells (POE-9n) and provide reference for oral precancerosis research.</p><p><b>METHODS</b>The transfection sensitivity of adenovirus into oral dysplastic epithelial cells was evaluated by the recombinant adenovirus p53 containing green fluorescent protein (rAd-GFP). Different titre rAd -p53 was transfected into oral dysplastic epithelial cells to evaluate the effects of rAd-p53 on cell proliferation inhibition by MIT assay. The expression of exogenous p53 gene in POE-9n cells was detected by immunocytochemistry.</p><p><b>RESULTS</b>More than 95% POE-9n cells were transfected by rAd-GFP with MOI from 100 to 500 and there was no statistical difference between different MOI values (r=-0.124, P>0.05). It was found that rAd-p53 had significant inhibition effects on POE-9n cell proliferation with MOI from 100 to 500, and there were no significant differences at 96 h and 120 h after the transfection on cell proliferation inhibition (P>0.05). P53 protein was well expressed in rAd-p53 transfected POE-9n cells.</p><p><b>CONCLUSION</b>Exogenous p53 can be successfully transfected into POE-9n cells by rAd-p53 and the virus titer of MOI 100 was high enough to ensure efficient transfection.</p>